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Asunto:NoticiasdelCeHu Hurricane Isabel.html
Fecha:Viernes, 19 de Septiembre, 2003  13:10:19 (-0300)
Autor:Monica Colombara <mlc>

Hurricane Isabel


Go to Science@NASA home page

Hurricane Isabel

NASA satellites have taken some remarkable pictures of Hurricane Isabel's North American landfall.


Sept. 18, 2003:  If you happened to be in North Carolina, the sight of advancing Hurricane Isabel was surely unwelcome. From space, though, it was a thing of beauty.

NASA's Terra satellite took this picture at 11:50 a.m. EDT on Sept. 18th just as heart of Isabel was making landfall. Red-, green- and blue-filtered images were combined to create a true-color view of the dangerous storm. A similar image was captured on Sept. 17th by NASA's Aqua satellite.

"The colors are natural," says Gary Jedlovec, a climate scientist at the National Space Science and Technology Center in Huntsville, AL. "This is what an astronaut would see looking down on the hurricane from orbit."

In fact, Terra and Aqua see much more than human eyes can. So do their sister satellites TRMM, Jason-1 and QuickScat--all members of NASA's Earth-observing fleet. Onboard instruments sense the temperature of the air, the distribution of moisture around the storm, the speed of its winds. They can even measure the heights of clouds.

"These data are invaluable to researchers who are trying to understand the inner workings of hurricanes," says Jedlovec.

What causes a hurricane to start? Which way will it go? And how long will it last? Millions of people under that big swirling cloud have a sudden interest in these questions. Terra, Aqua, and the others are finding the answers.


Credits & Contacts
Authors: Dr. Tony Phillips
Responsible NASA official: Ron Koczor
Production Editor: Dr. Tony Phillips
Curator: Bryan Walls
Media Relations: Steve Roy
The Science Directorate at NASA's Marshall Space Flight Center sponsors the Science@NASA web sites. The mission of Science@NASA is to help the public understand how exciting NASA research is and to help NASA scientists fulfill their outreach responsibilities.

more information

Recipe for a Hurricane -- NASA satellites improve hurricane forecasts using space-based observations, data assimilation, and computer climate modeling.

What's Driving Hurricane Isabel? -- NASA is keeping a close watch on Hurricane Isabel as it churns in the Atlantic with winds that top 100 miles per hour.

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